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[Help-glpk] Re: parallelism and glpk
From: |
Jose Monreal |
Subject: |
[Help-glpk] Re: parallelism and glpk |
Date: |
Mon, 9 Feb 2009 17:42:24 -0300 |
User-agent: |
KMail/1.9.9 |
> It is difficult to say what precisely happens. Could you provide more
> details? In particular, could you determine in which glpk routine the
> error occurs? Please note that glpk is not re-entrant and has no
> synchronization features, so glpk routines must not be called from
> parallel tasks within the same address space.
Sometimes it hungs at SIMPLEX, but I guess because the data given to it its
not the correct, somehow glpk is writing on the address space of the DSM
system.
I know that glpk is not re-entrant. What I do is each node solve a different
transportation problem, each computer runs its own glpk problem, the data is
divided in parallel, but glpk is runned sequentaly.